Valve Adjustment - Page 3 - Yamaha R6 Forum: YZF-R6 Forums
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post #21 of 156 (permalink) Old 10-11-2012, 06:33 PM
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Re: Valve Adjustment

you won't get carbon build up on the intakes.. only the exhaust (air/fuel in and then the intake valve is closed when it goes "bang" and when the exst valves opens), but the bike DOES look amazing. Awesome upkeep. That seat looks like you could take a good long ride and not have your butt fall asleep.

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Last edited by MELK-MAN; 10-11-2012 at 06:37 PM.
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post #22 of 156 (permalink) Old 10-11-2012, 07:08 PM
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Re: Valve Adjustment

Quote:
Originally Posted by MELK-MAN View Post
you won't get carbon build up on the intakes.. only the exhaust (air/fuel in and then the intake valve is closed when it goes "bang" and when the exst valves opens), but the bike DOES look amazing. Awesome upkeep. That seat looks like you could take a good long ride and not have your butt fall asleep.
Well at 16k miles after only using YamaLube (I had no idea it was the worst oil on the market) I had carbon build up on the intake valves, I switched over to Amsoil and by the next oil change the valves were crystal clean. AND YES I KNOW it should not really effect the intake valves since they are being sprayed with fuel the entire time and should not ever come in contact with engine oil (but the crankcase does breath through the airbox), but I have honestly refueled at the same Exxon near my house every of the time (I have to refuel at different places away from home on long trips, obviously), but I can't realy quantify it but it happened. And yes the seat is AWESOME.

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post #23 of 156 (permalink) Old 10-11-2012, 07:34 PM
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Re: Valve Adjustment

A bike without any imperfections is just asking for a slide, if you ask me.


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  • Should I start on a 600 or a 250? HERE
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post #24 of 156 (permalink) Old 10-11-2012, 08:25 PM
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Re: Valve Adjustment

My bike has got character.

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post #25 of 156 (permalink) Old 10-11-2012, 09:11 PM
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Re: Valve Adjustment

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Originally Posted by pickpocket293 View Post
A bike without any imperfections is just asking for a slide, if you ask me.
i'm not superstitious.. yet when i have race bodywork painted, or get a new set of leathers or a helmet, i put a little scratch on it

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Silkolene, JenningsGP, Engine Ice, Sharkskinz, Pit-Bull


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post #26 of 156 (permalink) Old 10-11-2012, 09:44 PM Thread Starter
R6 ORLY??
 
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Re: Valve Adjustment

Quote:
Originally Posted by MELK-MAN View Post
checking valve clearance is VERY easy.. adjusting valves is another story entirely. I would get a quote to CHECK valves. The 3rd gen valves are coated titanium valves. The hard coat just doesn't wear for a very long time. Once it wears off though, and the soft TI (soft compared to stainless steel) is exposed to the valve seats, the recess up into the valve pocket pretty fast, your clearance shrinks, and you get lower compression numbers. That leads to hard starts, and loss of power.
Again.. CHECKING clearance is super easy. Pull the tank and airbox outa the way. Get all the plug wires and coils out, the valve cover will come out, and then remove the timing chain/ignition cover. Rotate the crank with teh 12mm bolt to get the intake cam lobes pointed back for each pair you check.. and the exst. lobes pointing forward (all level with the head angle). Slide the feeler gauge under each lobe!
That's it! if you can't get the spec feeler in there, they are out of spec. If you can't get ANY feeler gauge in there.. the clearance is close to or zeroed out.



spark plugs every other oil change?? wow.. LOL .. benefit of that is his plugs should never get seized in the head
thnks for the info! i have a friend with a kawi and he is wanting to tackle his valves. im thinking of hanging out and watching what happens. if all goes well then i will check mines out before i decide if a valve adjust is needed at that time.

plugs first. then i shall worry bout this valve jobbs
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post #27 of 156 (permalink) Old 10-11-2012, 09:56 PM
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Re: Valve Adjustment

how often do you track or race only guys do it? I have one full race season on my bike but I'm only at like 4000 miles.

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post #28 of 156 (permalink) Old 10-11-2012, 10:01 PM
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Re: Valve Adjustment

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Originally Posted by Shawn3210 View Post
how often do you track or race only guys do it? I have one full race season on my bike but I'm only at like 4000 miles.
My bike has 5800 miles (all but 1000 of those are on the track only) and I will not be doing a valve check until at least 20k miles (if it survives that long). These bikes were DESIGNED to be ridden hard at the track. That's what they're made for.


Things I am sick of explaining on this forum:
  • What's the difference between an R6 and an R6s? HERE
  • Should I start on a 600 or a 250? HERE
  • How do I ask the forum a question and actually get an answer? HERE
  • Where do I find a map for my Bazzaz? HERE
  • Should I get a 520 kit for MOA POWAH? HERE
  • How does rotating mass work? HERE
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post #29 of 156 (permalink) Old 10-11-2012, 10:03 PM
Will work for track time
 
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Re: Valve Adjustment

Do it yourself. I have a half write up that I never completed. Its really not that hard to check them especially if you have a manual.
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post #30 of 156 (permalink) Old 10-11-2012, 10:18 PM Thread Starter
R6 ORLY??
 
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Re: Valve Adjustment

i have about 8 track day times on mines and rode about 20,000 since i got her back in 3/10. will do the check myself but if it needs adjusting then i am sourcing a reputable shop.
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